Haier AP182FABHA [75/174] Au48 diagnostic information and trouble shooting

Haier AE122FCAKA [75/174] Au48 diagnostic information and trouble shooting

10.2 AU48- diagnostic information and trouble shooting

The failure code is displayed on the outdoor PCB; please diagnose the trouble according to the following code:

Failure

code

Failure position Judgment measure

01 Outdoor defrosting temp.

sensor TE circuit

Examine the sensor below 20H in cut circuit or over

1000H in short circuit for continuous 60 seconds,

recoverable

02 Ambient temp. sensor TA

circuit

Examine the sensor below 20H in cut circuit or over

1000H in short circuit for continuous 60 seconds,

recoverable

03 Suction temp. sensor TS

circuit

Examine the sensor below 20H in cut circuit or over

1000H in short circuit for continuous 60 seconds,

recoverable

04 Discharge temp. sensor TD

circuit

Examine the sensor below 20H in cut circuit or over

1000H in short circuit for continuous 60 seconds after

compressor working for 3 minutes, recoverable

05 Outdoor mid-condenser temp.

sensor

Examine the sensor below 20H in cut circuit or over

1000H in short circuit for continuous 60 seconds,

recoverable

06 Over current Alarm over current failure, on exceeding current

protection value C for 5 seconds. After occurrence 3

times in 30 minutes, failure code displays on the LED,

unrecoverable

07 Current mutual inductance

circuit

After closing compressor, the current of current

mutual inductance is checked over 15A. when

starting up the compressor, frequency is over 60HZ,

and current is below 5A, recoverable

08 Inverter compressor built-in

over-load protection circuit

Inverter compressor built-in over-load protector acts.

09 IPM protection

IPM over current、short current、temp. too high、lack

of pressure protect alarm 3 times continuously in 30

minutes, unrecoverable

10 EEPROM on PCB faulty 857 reads and writes the data of EEPROM faulty,

flashes 11 times, unrecoverable

11 Discharge temp. sensor

protection acts (TD)

Examine TD1 sensor alarms compressor off after 5

seconds at over 120℃, confirming 3 times in

30minutes, and displaying 11 on the LED,

unrecoverable

12

Pressure sensor （Pd、Ps）

wiring faulty

After compressor starting up 3 minutes, examine

compressor rate(Pd/Ps) is below 0.9 for continuous

60 seconds, recoverable

13 Pressure switch circuit High pressure switch acts, trouble disappears after 2

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